I ' ll need an economy class open return 我要一張經濟艙的不限回來時間的來回票。
I want a first class open return , please 我要一張回程不定期的頭等雙程票。
I ' ll need an economy ticket with an open return 我要一張經濟艙,回來時間不定的來回票。
I need an economy class open return 我需要一張經濟艙的往返機票。
I ' d like an open return ticket . how long is it good for 我要一張回程日期空白的機票。它的效期多常?
I want an open return ticket to london for december first 我想買一張十二月一日去倫敦的回程不定期往返票。
Please book an open return flight from los angeles to new york 請幫我預訂一張從洛杉磯到紐約的不限日期的回程機票。
The reasonableness , means the best joint point should be explored at all possibilities , by comparison of opening returns and costs , which results in max returns at min costs 所謂合理,也就是在開放利益和開放代價中做出比較,盡可能找出一個最好的結合點,即收益最大,代價最低。
We analyse the dispersion of stock returns and have the tests of serial correlation . the results show that the trading mechanism has a significant effect on a number of characteristics of stock returns . first , the distribution of open - to - open returns has greater variance than that of close - to - close returns . second . the serial correlation pattern is quite different in the two return series . the open - to - open returns have negative autocorrelation coefficient , but the close - to - close returns is positive . further , employing an arma ( 1 , 1 ) model we find that in the opening . returns exhibit higher residual noise and stronger dependence on past returns , reflecting stronger deviations from the random - walk form of the market efficiency hypothesis 主要表現為:一,開盤收益序列比收盤收益序列具有更大的方差。二,兩種收益序列的序列相關形式不同,開盤收益序列表現為負相關,而收盤收益序列表現為正相關。而且我們通過arma ( 1 , 1 )模型的進一步檢驗,發現開盤收益序列比收盤收益序列具有更大的殘差,更依賴于過去的收益序列,也更偏離于市場有效的隨機游走形式的假設。